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Latest intel driver in arch linux has sna support (if you do the xorg.conf change), so I enabled it on my ironlake machine to test. Can't say I've noticed much difference in real world usage yet, but it didn't break anything either so I guess there's that

Does anyone know what kind of "real world" usage would show sna's improvements?

Latest intel driver in arch linux has sna support (if you do the xorg.conf change), so I enabled it on my ironlake machine to test. Can't say I've noticed much difference in real world usage yet, but it didn't break anything either so I guess there's that

Does anyone know what kind of "real world" usage would show sna's improvements?

Well, I've obviously completedly failed if you haven't noticed any of your common tasks improved by SNA. So what is your common workload?

Well SNA enabled triggers more often the xserver crash with debian wheezy when kde 4 effects are turned off/on. As i still need that to get teerfree video i would like to know what patches are needed for the xserver - best force em to be added to the debian wheezy xserver...

So for the first time after a long while, I used my Ironlake machine full-time today. And I had this weird feeling all the time as if the display is out of focus. In trying to figure it out, I switched from SNA back to UXA. And what do you know, the feeling was gone immediately. So I took some screenshots.

Here a toolbar button with UXA:
The same toolbar button with SNA:

Note in particular the right edge. You might think that the difference is very small, but it's enough to give me the weird feeling.

Versions of relevant packages are xf86-video-intel-2.20.3, cairo-1.12.2, gtk2-2.24.11, the theme being rendered is Clearlooks. Such a tiny thing, but you know what, I'll stick with UXA for the time being. I'm very sensitive to such things. For example, I use the lcdlegacy freetype filter for fonts, because what the lcddefault filter renders is way too blurry for my eyes.

So for the first time after a long while, I used my Ironlake machine full-time today. And I had this weird feeling all the time as if the display is out of focus. In trying to figure it out, I switched from SNA back to UXA. And what do you know, the feeling was gone immediately. So I took some screenshots.

Here a toolbar button with UXA:
The same toolbar button with SNA:

Note in particular the right edge. You might think that the difference is very small, but it's enough to give me the weird feeling.

Versions of relevant packages are xf86-video-intel-2.20.3, cairo-1.12.2, gtk2-2.24.11, the theme being rendered is Clearlooks. Such a tiny thing, but you know what, I'll stick with UXA for the time being. I'm very sensitive to such things. For example, I use the lcdlegacy freetype filter for fonts, because what the lcddefault filter renders is way too blurry for my eyes.

If the join indicates the pair of edges are parallel, we may be
considering the final segment of the spline with a different tangent
vector than the slope of the final edge and so lead to false dropping of
an edge. This has the effect that the line segments between 'arc arc arc
arc' (a rounded rectangle) are no longer horizontal or vertical. As path
construction tries to eliminate joins between colinear segments, this
optimisation should not be required anyway.